EP0744259A2 - Klebevorrichtung für Faserplattenherstellungsanlagen, und Anlage in welcher sie angewandt wird - Google Patents

Klebevorrichtung für Faserplattenherstellungsanlagen, und Anlage in welcher sie angewandt wird Download PDF

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Publication number
EP0744259A2
EP0744259A2 EP96107525A EP96107525A EP0744259A2 EP 0744259 A2 EP0744259 A2 EP 0744259A2 EP 96107525 A EP96107525 A EP 96107525A EP 96107525 A EP96107525 A EP 96107525A EP 0744259 A2 EP0744259 A2 EP 0744259A2
Authority
EP
European Patent Office
Prior art keywords
cylindrical shell
gluing machine
fibres
plant
glue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96107525A
Other languages
English (en)
French (fr)
Other versions
EP0744259A3 (de
EP0744259B1 (de
Inventor
Luigi Frati
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Costruzioni Meccaniche Pomponesco CMP SpA
Original Assignee
Costruzioni Meccaniche Pomponesco CMP SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Costruzioni Meccaniche Pomponesco CMP SpA filed Critical Costruzioni Meccaniche Pomponesco CMP SpA
Priority to SI9630176T priority Critical patent/SI0744259T1/xx
Publication of EP0744259A2 publication Critical patent/EP0744259A2/de
Publication of EP0744259A3 publication Critical patent/EP0744259A3/de
Application granted granted Critical
Publication of EP0744259B1 publication Critical patent/EP0744259B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent

Definitions

  • This invention relates to a gluing machine (also known as a resin-bonding machine) of the type usable in plants for producing wood fibreboard panels by a dry process, and in particular in plants for producing medium density fibreboard (MDF) panels.
  • a gluing machine also known as a resin-bonding machine
  • MDF medium density fibreboard
  • the invention also relates to a plant for producing wood fibreboard panels by a dry process, which uses the gluing machine.
  • the reference numeral 10 indicates a grinder, ie a machine which, fed with wood and steam (this feed being indicated by the arrow 12), reduces the wood into fibre form.
  • the fibres produced in this manner and mixed with steam (relative humidity 100%) leave the grinder 10 through a blow-up valve and are conveyed by a line 16 to a drier 18. This latter is also fed, by a fan 19 and duct 20, with hot gas 22 and air 24 at ambient temperature to dry the fibres.
  • the drier interior is at a variable temperature adjustable from 120° to 250°.
  • the fibres dried in this manner are conveyed by a line 26 to a separator or cyclone 28, in which the dry fibre is separated from the steam and from the gas which develops during drying, the gas and steam being discharged to atmosphere, as indicated by the arrow 30.
  • the fibres leaving the cyclone 28, which have a moisture content of between 2 and 5%, are fed by the line 32 to a continuously operating weigher 34 where they are metered.
  • the fibres leaving the weigher 34 and fed into the line 36 are struck by an air stream 38 which transports them into a gluing or resin-bonding machine via a feed line 40.
  • the gluing machine 42 consists of a hollow cylindrical shell 44 arranged horizontally and having a circular cross-section, in which a mixing means is present consisting of a shaft 50 positioned coaxially in the cylindrical shell 44 and provided with radial paddles 52.
  • the shaft 50 is rotatable and is rotated by a motor 54 positioned outside the gluing machine 42.
  • the left end 46 of the gluing machine is traversed by a series of nozzles (shown schematically in the figure by arrows 48) distributed about the end, by means of which a liquid adhesive substance consisting normally of a conventional urea-formaldehyde glue previously mixed with water is sprayed into the gluing machine.
  • a liquid adhesive substance consisting normally of a conventional urea-formaldehyde glue previously mixed with water is sprayed into the gluing machine.
  • the paddles 52 generate a mixing action on the fibres onto which the adhesive substance has been sprayed.
  • These fibres are then fed via a line 56 to a conventional moulder 58 which itself feeds conventional presses, not shown in Figure 1.
  • a separator (not shown) can be provided for the purpose of separating fibre and glue lumps which may form in the gluing machine 42.
  • the lumps separated in this manner can be used as fuel in a boiler (not shown) forming part of the plant.
  • the aforedescribed traditional plant has the advantage of low glue consumption and low formaldehyde emission into the atmosphere in correspondence with the reference numeral 30.
  • the described gluing machine does not enable the glue to be distributed in a sufficiently uniform manner within the fibre mass, with the result that this plant produces poor quality panels with the formation of lumps and stains which drastically limit the use of the product obtained.
  • the panels produced in this manner cannot be enhanced or lacquered.
  • these panels do not present mechanical and technological characteristics which are constant with time and uniform throughout the panel.
  • the glues of class E1 enable panels to be produced containing free formaldehyde, and hence releasable, in a quantity not exceeding 8 mg per 100 g of panel. It is therefore normally necessary to use more reactive glues (of class E2 or E3) which however result in higher formaldehyde emission in the pressing stage, with resultant environmental problems.
  • the fibre mass reaching the moulder 58 has a moisture content (between 2 and 5 wt%) which is lower than that necessary for pressing, with the result that this moisture content must be increased to between 8 and 11%.
  • This plant is illustrated schematically in Figure 2 and comprises a grinder 110 similar to that (10) of the plant of Figure 1.
  • the fibres leaving this latter through the blow-up valve 114 are fed, before they enter the drier 118, with a suitable quantity of liquid adhesive substance (of similar type to that used in the first plant) via a suitable nozzle (not shown) directly into the pipe 116.
  • a suitable quantity of liquid adhesive substance of similar type to that used in the first plant
  • a suitable nozzle not shown
  • the plant also comprises a cyclone 128 and a weigher 134 similar to those of Figure 1, however there is no gluing machine (and hence no machine similar to that indicated by 42 in Figure 1) because it is unnecessary. Consequently the glue-impregnated fibre leaving the weigher 134 is directly fed, via the line 136, to the moulder 158 (similar to the moulder 58 of Figure 1) at which the glue-impregnated fibres arrive already with a moisture content of 8-11 wt%, suitable for the pressing. With this second type of plant excellent glue distribution is achieved, so that the panels obtained as final product are of excellent quality and can also be enhanced or lacquered.
  • the object of the present invention is to provide a gluing machine usable both in plants of the first plant type defined heretofore as traditional and in a new plant type described hereinafter, the gluing machine enabling excellent glue distribution to be achieved throughout the fibre mass used for forming the panel.
  • the gluing machine of the present invention comprising a hollow cylindrical shell, at one end of which there is provided an inlet opening for feeding an air stream transporting the fibres within which the glue is to be distributed, at the other end of the cylindrical shell there being provided an outlet opening for removing the air stream transporting the glue-impregnated fibres, and a sprayer means for spraying a suitable liquid adhesive substance onto the fibres flowing through the cylindrical shell, characterised by also comprising means for maintaining the flowing fibres close to the inner wall of the cylindrical shell for a predetermined distance, the sprayer means being positioned within said distance in which the fibres are maintained close to the inner surface of the cylindrical shell.
  • said means for maintaining the fibres in proximity to the inner lateral wall of the cylindrical shell comprise a pipe, an open end of which opens into said cylindrical shell in the vicinity of the sprayer means, the pipe extending coaxially upstream at least for a certain distance before emerging from the cylindrical shell, an air stream being fed into the other end of said pipe.
  • the gluing machine of the present invention can comprise a mixing means disposed in that portion of the cylindrical shell downstream of the position in which the fibres are struck by the spray of adhesive substance.
  • This mixing means can consist of a conventional rotatable shaft provided with paddles arranged coaxially to the cylindrical shell.
  • the aforedescribed gluing machine can be conveniently used as a replacement for the conventional gluing machine 42 of the traditional plant shown in Figure 1. Using it, with the plant modified in this manner, panels can be obtained of substantially better quality than those obtainable from the traditional plant.
  • the gluing machine of the present invention can be located in other suitable positions in a plant for producing wood fibreboard panels by a dry process.
  • the gluing machine can be used directly in combination with the drier indicated by 18 in Figure 1, to hence obtain a plant somewhat similar to that shown in Figure 2.
  • the gluing machine indicated overall by 242, comprises a hollow cylindrical shell 244 of circular cross-section. At the left end of the cylindrical shell 244 there is provided an inlet opening 245 through which a stream of air transporting the fibres in a previously metered quantity is fed tangentially to the gluing machine 242 via a feed pipe 240.
  • the fibres originating from a cyclone separator such as 28 of Figure 1 and metered in a weigher such as that indicated by 34 in the same figure, reach the feed pipe 240 of the gluing machine 244 from the duct 236.
  • the left end 246 of the cylindrical shell 244 is traversed by a pipe 247 which extends coaxially for a certain distance within the cylindrical shell 244, the inner end 249 of the pipe 247 being open.
  • a pipe 247 Coaxially with the internal portion of the pipe 247 there is a tube 251 terminating, in proximity to the end 249 of the pipe 247, with a sprayer means consisting of a nozzle 248. This latter generates a conical spray of suitable contained angle.
  • a mixing means of traditional type comprising a rotatable shaft 250 provided with paddles 252, said shaft projecting through a suitable opening in the right end of the cylindrical shell 244 and being rotated by an external motor (not shown).
  • an outlet opening 253 and a relative exit pipe 254 for conveying the fibres sprayed with glue to the subsequent conventional operations.
  • the operation of the aforedescribed gluing machine 244 is briefly as follows.
  • the air stream and fibres fed through the pipe 240 and entering the gluing machine tangentially through the inlet opening 245 are distributed within the annular space between that portion of the pipe 247 within the cylindrical shell 244 and the corresponding inner surface of this latter, to obtain in the first part of the cylindrical shell 244 (indicated by A in Figure 3) a cyclonic distribution of the fibres (which along this distance describe basically a roughly helical trajectory).
  • an auxiliary air stream of suitable pressure, throughput and velocity chosen on the basis of the result to be obtained.
  • This auxiliary air stream opens into the cylindrical shell 244 via the slightly flared end 249 of the pipe 247. Because of the action of the auxiliary air stream, the annular air stream which transports the fibres is maintained, for a certain distance downstream of the end 249 of the pipe 247, adjacent to the inner surface of the cylindrical shell 244. In this respect, the central space of the annular flow tube of this latter cyclonic air and fibre stream is occupied by the auxiliary air stream leaving the pipe 247.
  • a suitable pressurized liquid adhesive substance into that end of the tube 251 external to the cylindrical shell 244, there emerges from the spray nozzle 248 a conical spray of adhesive substance having a contained angle chosen on the basis of the results to be obtained.
  • this spray is entrained downstream to assume a brush configuration shown schematically in Figure 3 and indicated by the reference numeral 255. Consequently, through a certain distance (indicated by B in Figure 3) downstream of the spray nozzle 248 there is atomization of the adhesive substance (atomization zone). Downstream of the zone B the air stream which transports the fibres and the auxiliary air stream which transports the glue particles mix together, so that there is an actual gluing zone (indicated by C in Figure 3) in which the particles of adhesive substance are picked up by the fibres.
  • the overall air stream, transporting the already glue-impregnated fibres, then leaves the gluing machine through the opening 253, to be fed to subsequent conventional moulding operations.
  • the gluing machine With the aforedescribed gluing machine it is possible to achieve a much more uniform distribution of adhesive substance within the fibre mass than with known gluing machines, resulting in a substantial improvement in the quality of the final plant product. If the gluing machine is also provided with mixing means (for example the rotatable shaft 250 with the relative paddles 252), the performance of the gluing machine of the present invention can be further improved. It should be noted that said mixing means are not essential, the same result being also achieved by increasing the auxiliary air throughput.
  • the nozzle 248 which sprays the liquid adhesive substance can be of low pressure type, so that compressed air is fed into the adhesive substance (water plus glue), or of high pressure type (without compressed air), in which the adhesive substance pressure can reach 300 bar.
  • the sprayer means 248 can also consist of several nozzles, provided that they are struck by the auxiliary air stream. What is important is that a good glue distribution within the fibre mass is achieved.
  • the gluing machine of the present invention can also be located in other positions within a plant for producing wood fibreboard panels by a dry process, provided that the conditions required for operation of the gluing machine (adequate air throughput and adequate temperature range) exist or are created.
  • the conditions required for operation of the gluing machine (adequate air throughput and adequate temperature range) exist or are created.
  • a gluing machine of this type is shown schematically, in which parts equal to or of similar function to those of Figures 4 and 1 are indicated by adding 100 and 300 to the relative reference numeral.
  • the gluing machine 342 has a hollow cylindrical shell which is basically an extension of the casing of the drier 318 (shown only partially), this latter being of the same type as the drier 18 of Figure 1.
  • the cylindrical shell 344 of the gluing machine 342 is traversed radially by a pipe 347, this latter then bending towards downstream, to coaxially follow the hollow shell 344 for a certain distance and then terminate with an open end 349.
  • a pipe Coaxially to that portion of the pipe 347 within the hollow shell 344 there is a pipe which terminates, in the vicinity of the open end 349 of the pipe 347, with a sprayer means consisting of a nozzle 348 which produces a conical spray of suitable contained angle.
  • At the right end ( Figure 5) of the gluing machine 342 there is an outlet opening, with relative exit pipe 354, for removing the glue-impregnated fibres.
  • the operation of the gluing machine 342 should be apparent from the preceding. The following should however be noted.
  • the hot air stream which transports the fibres dried in the drier 318 passes directly into the gluing machine 342, into the annular space between the inner surface of the cylindrical shell 344 and the coaxial inner portion of the pipe 347. Simultaneously, into the outer end of the pipe 347 an auxiliary air stream is fed having a suitable throughput, velocity and pressure for obtaining the desired results.
  • the auxiliary air stream opens into the cylindrical shell 344 via the end 349 of the pipe 347, so that the air stream transporting the fibres is maintained, for a certain distance downstream of the end 349 of the pipe 347, adjacent to the inner surface of the cylindrical shell 344, the central space of the relative annular flow tube being occupied by the auxiliary air stream.
  • a suitable pressurized liquid adhesive substance into the outer end of the tube 351, there emerges from the spray nozzle 348 a conical spray having a convenient contained angle.
  • the spray assumes a brush configuration 355 shown in Figure 5.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
EP96107525A 1995-05-24 1996-05-10 Klebevorrichtung für Faserplattenherstellungsanlagen, und Anlage in welcher sie angewandt wird Expired - Lifetime EP0744259B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9630176T SI0744259T1 (en) 1995-05-24 1996-05-10 Gluing machine for wood fibreboard panel production plants, and a plant using the gluing machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI951065 1995-05-24
ITMI951065A IT1274565B (it) 1995-05-24 1995-05-24 Incollatrice per impianti di produzione di pannelli in fibra di legno,e impianto utilizzante tale incollatrice

Publications (3)

Publication Number Publication Date
EP0744259A2 true EP0744259A2 (de) 1996-11-27
EP0744259A3 EP0744259A3 (de) 1996-12-11
EP0744259B1 EP0744259B1 (de) 2000-04-05

Family

ID=11371666

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96107525A Expired - Lifetime EP0744259B1 (de) 1995-05-24 1996-05-10 Klebevorrichtung für Faserplattenherstellungsanlagen, und Anlage in welcher sie angewandt wird

Country Status (14)

Country Link
US (1) US5792264A (de)
EP (1) EP0744259B1 (de)
JP (1) JPH0999413A (de)
AT (1) ATE191390T1 (de)
AU (1) AU706268B2 (de)
CA (1) CA2176616A1 (de)
DE (1) DE69607514T2 (de)
DK (1) DK0744259T3 (de)
ES (1) ES2144662T3 (de)
IT (1) IT1274565B (de)
NZ (1) NZ286596A (de)
PT (1) PT744259E (de)
SI (1) SI0744259T1 (de)
TR (1) TR199600413A2 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999003570A1 (en) * 1997-07-19 1999-01-28 Keeco Uk Limited Method and equipment for mixing a powder with a liquid and for reacting a powder with a liquid
DE19740676A1 (de) * 1997-09-16 1999-03-18 Fraunhofer Ges Forschung Verfahren zum Beleimen von Fasern
FR2828128A1 (fr) * 2001-08-01 2003-02-07 Kronospan Tech Co Ltd Panneau de fibres fabrique sous moyenne pression et son procede de fabrication
WO2003013809A1 (de) * 2001-08-01 2003-02-20 Kronospan Technical Company Ltd. Umweltfreundlich hergestellte platte aus einem holzwerkstoff
WO2004007159A1 (de) * 2002-07-10 2004-01-22 Kronospan Technical Company Limited Mdf-presstechnologie
US6902125B2 (en) 2000-05-24 2005-06-07 Fritz Schneider Process and device for disintegrating irregularities in flows of wood fibres
US7094309B2 (en) 2000-08-11 2006-08-22 Fritz Schneider Flakeboard Company Limited Process and device for gluing dried fibers designated for the production of fiberboards
FR2964059A1 (fr) * 2010-08-31 2012-03-02 Terrachanvre Dispositif de projection de beton
EP2946895A1 (de) * 2014-05-20 2015-11-25 TEK.SP.ED. S.r.l. Technologie Speciali per l'Edilizia Vorrichtung zur herstellung eines zementagglomerats und entsprechendes verfahren

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1307924B1 (it) * 1999-01-25 2001-11-29 Cmp Spa Apparecchiatura incollatrice per impianti per produrre pannelli infibra di legno.
DE10059881B4 (de) * 2000-12-01 2005-06-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Anlage zur Faseraufbereitung
DE10224090A1 (de) * 2002-05-31 2003-12-11 Metso Paper Inc Verfahren und Vorrichtung zur Benetzung faseriger Rohstoffe mit Bindemittel
ITMO20040127A1 (it) * 2004-05-25 2004-08-25 Imal Srl Procedimento di incollaggio di frammenti o trucioli di legno per osb e apparato di incollaggio relativo.
NZ530339A (en) * 2004-06-23 2007-01-26 Nz Forest Research Inst Ltd Method for producing wood fibre pellets
DE102005032220A1 (de) * 2005-07-09 2007-01-11 Glunz Ag Verfahren zur Herstellung von Formkörpern, insbesondere Platten, aus Holzfasern und Vorrichtung für die Durchführung dieses Verfahrens
CN104162921A (zh) * 2013-05-17 2014-11-26 北京泛欧瑞得科技有限公司 一种用于纤维板的喷浆管高压定量节胶工艺
DE102015201464B4 (de) * 2015-01-28 2016-10-20 Brav-O-Tech Gmbh Vorrichtung und Verfahren zum Beleimen von Partikeln
CN114214745B (zh) * 2020-12-08 2023-01-10 中国纺织科学研究院有限公司 用于纤维气体干燥装置的气筒

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH597926A5 (de) * 1976-11-26 1978-04-14 Fahrni Peter
DE3143895C2 (de) * 1981-11-05 1985-01-17 Triangel Spanplatten KG, 3177 Sassenburg Verfahren und Vorrichtung zum Beleimen von teilchenförmigem Gut in Form von Spänen, Fasern o.dgl.
US4511603A (en) * 1983-12-19 1985-04-16 The Dow Chemical Company Addition of additives to plastics
FR2580684B1 (fr) * 1985-04-17 1987-06-19 Methorga Procede et dispositif pour la fabrication en continu d'un matelas encolle de fibres longues
US4997681A (en) * 1989-02-08 1991-03-05 Fiberglas Canada Inc. Mineral fiber nodules and method of making same
US5057166A (en) * 1989-03-20 1991-10-15 Weyerhaeuser Corporation Method of treating discontinuous fibers
SU1638010A1 (ru) * 1989-03-23 1991-03-30 Специализированное Проектно-Конструкторское Научно-Технологическое Бюро Научно-Производственного Объединения "Плитпром" Смеситель древесных частиц со св зующим

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999003570A1 (en) * 1997-07-19 1999-01-28 Keeco Uk Limited Method and equipment for mixing a powder with a liquid and for reacting a powder with a liquid
DE19740676C2 (de) * 1997-09-16 2003-07-17 Fraunhofer Ges Forschung Verfahren zum Beleimen von Fasern
DE19740676A1 (de) * 1997-09-16 1999-03-18 Fraunhofer Ges Forschung Verfahren zum Beleimen von Fasern
WO1999014023A1 (de) * 1997-09-16 1999-03-25 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum beleimen von fasern
US6902125B2 (en) 2000-05-24 2005-06-07 Fritz Schneider Process and device for disintegrating irregularities in flows of wood fibres
US7094309B2 (en) 2000-08-11 2006-08-22 Fritz Schneider Flakeboard Company Limited Process and device for gluing dried fibers designated for the production of fiberboards
WO2003013809A1 (de) * 2001-08-01 2003-02-20 Kronospan Technical Company Ltd. Umweltfreundlich hergestellte platte aus einem holzwerkstoff
WO2003013808A1 (de) 2001-08-01 2003-02-20 Kronospan Technical Company Ltd Mdf-platte nebst herstellung
FR2828128A1 (fr) * 2001-08-01 2003-02-07 Kronospan Tech Co Ltd Panneau de fibres fabrique sous moyenne pression et son procede de fabrication
EP2476526A1 (de) * 2001-08-01 2012-07-18 Kronoplus Technical AG MDF-Platte nebst Herstellung
WO2004007159A1 (de) * 2002-07-10 2004-01-22 Kronospan Technical Company Limited Mdf-presstechnologie
FR2964059A1 (fr) * 2010-08-31 2012-03-02 Terrachanvre Dispositif de projection de beton
EP2946895A1 (de) * 2014-05-20 2015-11-25 TEK.SP.ED. S.r.l. Technologie Speciali per l'Edilizia Vorrichtung zur herstellung eines zementagglomerats und entsprechendes verfahren

Also Published As

Publication number Publication date
DE69607514D1 (de) 2000-05-11
JPH0999413A (ja) 1997-04-15
AU706268B2 (en) 1999-06-10
EP0744259A3 (de) 1996-12-11
DK0744259T3 (da) 2000-07-17
PT744259E (pt) 2000-07-31
ATE191390T1 (de) 2000-04-15
DE69607514T2 (de) 2000-08-10
IT1274565B (it) 1997-07-17
ITMI951065A1 (it) 1996-11-24
NZ286596A (en) 1997-09-22
AU5249196A (en) 1996-12-05
US5792264A (en) 1998-08-11
CA2176616A1 (en) 1996-11-25
EP0744259B1 (de) 2000-04-05
ITMI951065A0 (it) 1995-05-24
SI0744259T1 (en) 2000-08-31
ES2144662T3 (es) 2000-06-16
TR199600413A2 (tr) 1997-04-22

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